@backland/schema/lib/withCache.js

TypeScript schema declaration and validation library with static type inference

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.withCache = withCache;
var _utils = require("@backland/utils");
function withCache(parent) {
  const cache = new Map();
  function getOrSet(key, onCreate) {
    if (!cache.has(key)) {
      if (typeof onCreate !== 'function') {
        throw new _utils.RuntimeError(`missing cache ${String(key)}`, {
          cache,
          parent
        });
      }
      cache.set(key, onCreate());
    }
    return cache.get(key);
  }
  getOrSet.cache = cache;
  return getOrSet;
}
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